摘要
选取常见的预应力混凝土梁作为分析模型,应用有限元分析软件ANSYS建立预应力混凝土梁有限元模型。分别采用实体单元和杆单元模拟梁和预应力筋,有效地模拟预应力效应。采用APDL语言进行参数化设计,计算了预应力梁单元在自质量作用下的变形与应力,并且进行了模态分析;考虑了梁单元的挠度和固有频率受到预应力大小、外荷载大小、截面形式、预应力筋的布置形式、预应力筋分布形式不同的影响,从而建立现存预应力与挠度、梁底应变、固有频率之间的关系,为结构中预应力筋的设计和预应力损失的研究提供一定的参考。
With actual bridge as the analysis model,the finite element model of prestressed concrete slabs unit was established by the finite element analysis software ANSYS.Beam and pre-stress reinforcement were simulated by Solid and Link elements and it was effective for simulation of pre-stress.The ANSYS parametric design language(APDL)was used for the calculation of deformation and stress under gravity.The modal analysis were carried out at the same time.Consideration of beam deflection and natural frequency under the effects by the different of the prestressed,the arrangement of prestressed reinforcement,prestressed tendons form,which given some advice to the design of the prestressed concrete structure and some reference of the further study on prestressing loss.
作者
黄颖
许永吉
HUANG Ying;XU Yongji(Fujian Chuanzheng Communications College,Fujian Fuzhou 350007,China;Fujian Provincial Traffic Construction Engineering Testing Co.,Ltd.,Fuzhou,Fujian 350007,China)
出处
《南昌大学学报（工科版）》
CAS
2020年第1期33-39,45,共8页
Journal of Nanchang University(Engineering & Technology)
基金
福建省教育厅应用技术协同创新中心项目(闽教科[2018]105号)。
